对Tm3+/Yb3+编顶的LaVO4和GdVO4光体中的上转换发光和光学温度传感的比较研究
Madan M Upadhyay1, Kumar Shwetabh1, Kaushal Kumar1
1Optical Materials & Bio-imaging Research Laboratory, Department of Physics, Indian Institute of Technology (Indian School of Mines) Dhanbad 826004 India kkumar@iitism.ac.in.
RSC advances
|July 13, 2023
概括
合成和研究了/二氧化二氧化和二氧化二氧化的合成和研究了上转换发射. 拉沃:Tm3+/Yb3+显示光学温度计的灵敏度高于GdVO:Tm3+/Yb3+.
科学领域:
- 材料科学 材料科学 材料科学
- 固态化学 固态化学
- 发光的光度是非常的低的.
背景情况:
- 兰瓦纳酸盐 (LaVO) 和加多瓦纳酸盐 (GdVO) 是对的有希望的宿主材料.
- 稀土合材料中的上转换发光能使红外光有效地转化为可见光.
- 使用光强度比 (FIR) 的光学温度计提供非接触式温度传感能力.
研究的目的:
- 为了合成图 (Tm3+) 和伊特尔 (Yb3+) 配合LaVO4和GdVO4的.
- 为了研究它们在红外激发下向上转换的排放特性.
- 根据光强度比 (FIR) 评估它们对光学温度计的潜力.
主要方法:
- 合成的固态反应方法.
- 用X射线衍射 (XRD) 进行相位确认.
- 使用980nm激光二极管进行上转换辐射光谱.
- 用于光学温度计的光强度比 (FIR) 测量.
主要成果:
- 对于LaVO4和GdVO4,分别证实了纯单临床和四边形阶段.
- 强蓝色 (475nm) 和弱红色 (647,700nm) 的上转换排放被观察到Tm3+/Yb3+配角.
- 与GdVO相比,LaVO4:Tm3+/Yb3+表现出更高的绝对灵敏度 (21.2 × 10-3 K-1) 和GdVO4:Tm3+/Yb3+ (13.0 × 10-3 K-1) 在653 K.
- 多项式拟合为LaVO4提供了更好的灵敏度:Tm3+/Yb3+.
结论:
- Tm3+/Yb3+共的LaVO4和GdVO4被成功合成,具有不同的晶体结构.
- 这些体表现出适合光学传感应用的特征上转换排放.
- 拉沃:Tm3+/Yb3+由于其更高的灵敏度,证明了光学温度计的卓越性能.
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